Edits to code block and error message

Author: SnehaSudhirG

articles/automation/troubleshoot/runbooks.md

@@ -12,17 +12,18 @@ ms.custom: has-adal-ref, devx-track-azurepowershell
  This article describes runbook issues that might occur and how to resolve them. For general information, see [Runbook execution in Azure Automation](../automation-runbook-execution.md).
 
 
-## Start-AzAutomationRunbook fails with runbookName does not match expected pattern error message
+## Start-AzAutomationRunbook fails with "runbookName does not match expected pattern" error message
 
 ### Issue
-When you run `Start-AzAutomationRunbook` to start specific runbooks, it fails with the following error:
-
-`runbookName does not match expected pattern '^[a-zA-Z]*-*[a-zA-Z0-9]`
+When you run `Start-AzAutomationRunbook` to start specific runbooks:
 
 ```powershell
-`start-azautomationRunbook -Name "Test_2" -AutomationAccountName "AutomationParent" -ResourceGroupName "AutomationAccount" `Start-AzAutomationRunbook: `runbookname`does not match expected pattern '^[a-zA-Z]*-*[a-zA-Z0-9]*$'. 
+`start-azautomationRunbook -Name "Test_2" -AutomationAccountName "AutomationParent" -ResourceGroupName "AutomationAccount" '. 
 ```
-
+It fails with the following error:
+ 
+`Start-AzAutomationRunbook: "runbookname" does not match expected pattern '^[a-zA-Z]*-*[a-zA-Z0-9]*$'`
+ 
 ## Cause
 
 Code that was introduced in [1.9.0 version](https://www.powershellgallery.com/packages/Az.Automation/1.9.0) of the Az.Automation module verifies the names of the runbooks to start and incorrectly flags runbooks with multiple "-" characters or with an "_" character in the name as invalid.